The document discusses how to future proof Drupal skills by learning about changes between Drupal 7 and Drupal 8. It covers new topics in Drupal 8 like routes and controllers that have replaced hooks, dependency injection, the configuration system, forms as classes, and plugins. It provides code examples of how these concepts are implemented in Drupal 8, such as routing files, dependency injection configuration, and form classes. The document aims to demonstrate these changes through a Drupal 8 demo module.

1. Future Proofing your Drupal
Skills
Piyuesh kumar
QED42

2. Routes {Adding new menu / Access Control / Local
Tasks / Upcasting.}
Forms {Writing new custom form / Writing system settings
form.}
Configuration System.
More Changes for developers.
Drupal 8 Demo module showing all of the above
Topics
Drupal 8 Demo module showing all of the above
Drupal 8 Demo module showing all of the above
Drupal 8 Demo module showing all of the above
Drupal 8 Demo module showing all of the above
Drupal 8 Demo module showing all of the above
Drupal 8 Demo module showing all of the above
2

3. Terminologies
•
Dependency Injection
Service Container / Dependency Injection
Container
Routing
Controllers
ConfigFactory
ConfigFactory
ConfigFactory
ConfigFactory
ConfigFactory
3

4. Dependency Injection is a
25 $ term for a 5 ¢ concept
4

5. Lets take a look at some Wrong code to understand this.
5

6. OBJECT ORIENTED WRONG CODE
6

7. INJECTING ITEMS REQUIRED BY THE CLASS
7

8. THE LESS YOUR CODE
KNOWS ABOUT THINGS
IT NEED THE MORE
REUSABLE IT IS
8

9. ALL OUR NOTIFIER CLASS NEEDS TO KNOW IS IT NEEDS
SOMETHING ON WHICH IT HAS TO CALL THE SEND METHOD.
9

10. Learn More about DI
DrupalCon Portland (Kat Bailey)
https://www.youtube.com/watch?v=kocJ6pn9kEc
10

11. Service Container
A Service Container (or dependency injection container) is
simply a PHP object that manages the instantiation of
services (i.e. objects)
{d8_demo.services.yml}
11

12. 12

13. Things are about to get geeky!
13

14. Module Info file
14

15. Drupal 7
{d7.info}
15

16. Drupal 8
{d8.info.yml}
16

17. Routing
hook_menu replaced by
hook_default_menu_links ()
(https://drupal.org/node/20476
33 )
17

18. Routes
{d7.module}
18

19. Routes
{d8_demo.module}
{d8_demo.routing.yml}
19

20. Controllers
•Page
callbacks => Controllers
•namespace
Drupal/lib/<module_name/Controller/<Controller classname.php
What? Why so long?
20

21. Namespacing & Folder Structure
Name Spacing
• Keeps
it reusable in other project with risk factor for conflict = 0.
Drupal/<module_name>.
• Drupal/<module_name>/Controller
to keep all the Controllers related to
<module_name> grouped in the same place.
Folder Structure
• lib/Drupal/<module_name>/Controller/<classname.php
• lib
directory is used to keep all the php classes seperate from other module/yml files.
• The
Drupal/hello part of the directory path is needed to comply with PSR-0, a
standard that says that the complete class name must be represented on the file
system.
21

22. Drupal 8 Controller
{d8DemoController.php}
22

23. Route Access
•
•
•
•
Controlled via yml file iteslf.
_permission
_<access callback>
_options: _access_mode (ALL/ANY)
23

24. Defining _access_check_admin
•
Register a new service using d8_demo.services.yml
•
tagged with access_check so Drupal can find it when it
loads all access checks
•
Convention to create a unique service name starting with
access_check.
24

25. d8DemoAccessCheck
Extends
AccessInterface
25

26. Reusable Requirements
• Allow
everyone
_access: 'TRUE'
• Check
if user is logged in
_user_is_logged_in: 'TRUE'
• Check
if a user has a permission
_permission: 'my permission name'
• Check
if a user has a role
_role: 'role1+role2' (AND)
_role: 'role1, role2' (OR)
26

27. Menu Local Tasks(Drupal 7)
{d7_demo.module}
27

28. Menu Local tasks(Drupal 8)
{d8_demo.local_tasks.yml}
28

29. Upcasting
{d7_demo.module}
Drupal 8
29

30. Drupal 8 ParamConverter
{d8_demo.routing.yml}
{d8DemoController.php
}
30

31. Forms
•
Form Api stays the same in Drupal 8. However, forms are now
Classes coz of d8's Object-oriented nature.
•
Base Classes in core:
•
FormBase
•
ConfigFormBase
•
ConfirmFormBase
•
BulkFormBase
•
ViewsFormBase
•
FieldInstanceFormBase
31

32. FormBase/ConfigFormBase
Example
32

33. Forms Helper Methods
33

34. Configuration Management
variable_get()
variable_set()
variable_del()
34

35. How do i save my configurations now?
•
•
DrupalCoreConfigConfigFactory
Where does this data get saved now?
35

36. Plugin System
•
Info hooks => Plugins
•
hook_info => annotation based discovery
•
Why annotation based?
•
•
Memory used is released once the file is read.
•
•
Uses php's tokenizer which allows the files to be parsed as text.
Loading the file in as php would mean that allocated memory was
required until the request was finalised.
All info hooks as plugins.
36

37. Block as Plugins
37

38. Module/hook system
functions replaced with
module handler service(
https://drupal.org/node/1894
)
38

39. 39

40. Changes to commonly used Drupal functions/hooks
•
hook_init removed(https://drupal.org/node/2013014)
•
drupal_goto has been
removed(https://drupal.org/node/2023537)e.g.,
drupal_goto($url)=>new RedirectResponse($url);
•
hook_boot has been removed(https://drupal.org/node/1909596)
•
$_GET[‘q'] has been removed(https://drupal.org/node/1659562)
•
drupal_*_form functions replaced with formBuilder service. e.g.,
drupal_get_from => Drupal::formBuilder()->getForm()
•
and many more...(https://drupal.org/list-changes)
40

41. References
Demo code is available at
https://github.com/piyuesh23/Drupal8-demo
•
https://drupal.org/list-changes
•
http://previousnext.com.au/blog/controlling-accessdrupal-8-routes-access-checks
•
https://drupal.org/node/1800686
•
DrupalCon Portland Videos
(http://www.youtube.com/playlist?
list=PLpeDXSh4nHjRlZKs7cj2L_kLI5osP5ERc)
41

42. THANK YOU!!
42